Cheap flights from Washington to Montreal from $123 DCA, IAD → YUL
Ronald Reagan National Airport (DCA), Washington Dulles International Airport (IAD) → Montreal-Pierre Elliott Trudeau International Airport (YUL)
The cheapest return found recently is $405 with Air Canada, 30 Oct 2027 – 2 Nov 2027, found yesterday. The cheapest one-way found recently is $123 with Air Canada, 25 Nov, found yesterday.
- Cheapest one-way found recently
- $123, found yesterday
- Cheapest return found recently
- $405, 30 Oct 2027 to 2 Nov 2027
- Usual return price
- $394 to $424
- Cheapest month to fly
- January 2027, return fares from $383 found in the last 7 days
- Airlines with nonstop flights
- United Airlines
- Shortest nonstop flight found
- 1 h 46 min
Return
The cheapest return fare on each of 3 departure dates is usually $394 to $424.
Cheapest return found recently
$405
30 Oct 2027 – 2 Nov 2027 · Air Canada
Washington Dulles International Airport (IAD) → Montreal-Pierre Elliott Trudeau International Airport (YUL)
Leaves 5:15 p.m. · Return leaves 11:15 a.m. · 9 h of travel, both ways together
out 1 stop, back 1 stop
found yesterday
Cheapest nonstop return
$383
8 Jan 2027 – 10 Jan 2027 · Air Canada
Ronald Reagan National Airport (DCA) → Montreal-Pierre Elliott Trudeau International Airport (YUL)
Leaves 11:05 a.m. · Return leaves 8:30 a.m. · 3 h 40 min of travel, both ways together
out nonstop, back nonstop
found 5 days ago
Found recently, and the cheapest we hold
$405 30 Oct 2027 – 2 Nov 2027found yesterdaySee prices for these dates
$383 8 Jan 2027 – 10 Jan 2027found 5 days agoSee prices for these dates
What have prices looked like?
Over 43 days, 30 Sept to 12 Nov, the cheapest return we saw each day was $317 to $607.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 3 departure dates from 8 Jan 2027 to 30 Oct 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 3-night return fares leaving within 3 days of 30 Oct 2027 to compare.
Every date we hold
6 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 8 Jan 2027 – 10 Jan 2027 | $383 | Air Canada | Ronald Reagan National Airport (DCA) → Montreal-Pierre Elliott Trudeau International Airport (YUL) | out nonstop, back nonstop | found 5 days ago | See prices for these dates |
| 14 May 2027 – 16 May 2027 | $443 | Air Canada | Washington Dulles International Airport (IAD) → Montreal-Pierre Elliott Trudeau International Airport (YUL) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 30 Oct 2027 – 2 Nov 2027 | $405 | Air Canada | Washington Dulles International Airport (IAD) → Montreal-Pierre Elliott Trudeau International Airport (YUL) | out 1 stop, back 1 stop | found yesterday | See prices for these dates |
Which month looks cheapest?
January 2027 is the cheapest month — from $383.
Airlines on the cheapest dates: Air Canada.
One-way
Not enough comparable prices yet for a usual one-way price.
Cheapest one-way found recently
$123
25 Nov · Air Canada
Ronald Reagan National Airport (DCA) → Montreal-Pierre Elliott Trudeau International Airport (YUL)
Leaves 6:55 p.m. · 4 h 30 min trip
1 stop
found yesterday
Cheapest nonstop one-way
$126
11 Dec · United Airlines
Ronald Reagan National Airport (DCA) → Montreal-Pierre Elliott Trudeau International Airport (YUL)
Leaves 6:00 a.m. · 1 h 46 min trip
nonstop
found yesterday
Found recently, and the cheapest we hold
$123 25 Novfound yesterdayOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 15 days, 25 Sept to 12 Nov, the cheapest one-way we saw each day was $112 to $177.
15 days is a short history, so treat this range as an early guide.
Those were the prices on those days, not today's.
Is this a good one-way price?
Not enough comparable prices yet: we hold one-way fares on 2 departure dates and need at least 3 to say what is usual.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 25 Nov to compare.
Every date we hold
3 fares on 2 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 25 Nov | $123 | Air Canada | Ronald Reagan National Airport (DCA) → Montreal-Pierre Elliott Trudeau International Airport (YUL) | 1 stop | found yesterday | Open this trip |
| 11 Dec | $126 | United Airlines | Ronald Reagan National Airport (DCA) → Montreal-Pierre Elliott Trudeau International Airport (YUL) | nonstop | found yesterday | Open this trip |
Which month looks cheapest?
November 2026 is the cheapest month — from $123.
Airlines on the cheapest dates: Air Canada, United Airlines.
Premium cabin fares from Washington to Montreal
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 30 Oct 2027 – 2 Nov 2027 in another cabin: Premium economy · Business · First
Today's prices for 25 Nov in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Washington to Montreal?
Return
Fares 14 to 29 days before departure were typically 46% lower than 0 to 6 days before departure.
From the cheapest return each day between 30 Sept and 12 Nov (43 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $664 | $435 | +83% | 10 |
| 14–29 days | $362 | $362 | Cheapest seen | 9 |
| 30–59 days | $378 | $378 | +4% | 10 |
| 60–89 days | $389 | $383 | +8% | 13 |
| 180+ days | $443 | $317 | +22% | 20 |
One-way
Not enough history yet: in 15 days of one-way prices, 25 Sept to 12 Nov, fewer than 3 booking ranges had prices on 7 days or more.
Could a nearby airport be cheaper?
A different airport at either end can change the fare — sometimes a lot.
Return
Washington → Burlington
120 km from Montreal
$334
$71 less than flying to Montreal
15 Jan 2027 – 18 Jan 2027 · DCA → BTV · out 1 stop, back nonstop
found 2 days ago
Baltimore → Montreal
57 km from Washington
$529
$124 more than flying from Washington
8 Jan 2027 – 10 Jan 2027 · BWI → YUL · out 1 stop, back 1 stop
found 5 days ago
Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.
Live price for these dates
The cheapest return found recently is for 30 Oct 2027 – 2 Nov 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Washington to Montreal?
The cheapest return found recently is $405 with Air Canada, 30 Oct 2027 to 2 Nov 2027, found yesterday. The cheapest return we hold, of any age, is $383 with Air Canada, 8 Jan 2027 to 10 Jan 2027, found 5 days ago. The cheapest return fare on each of 3 departure dates is usually $394 to $424.
How much is a one-way flight from Washington to Montreal?
The cheapest one-way found recently is $123 with Air Canada, 25 Nov, found yesterday.
What is the cheapest month to fly from Washington to Montreal?
January 2027 is the cheapest month for a return, from $383, 8 Jan 2027 to 10 Jan 2027, found 5 days ago. November 2026 is the cheapest month for a one-way, from $123, 25 Nov, found yesterday.
How far ahead should I book a flight from Washington to Montreal?
In 43 days of prices between 30 Sept and 12 Nov, return fares 14 to 29 days before departure were typically 46% lower than 0 to 6 days before departure.
Is there a direct flight from Washington to Montreal?
Yes, the cheapest nonstop return found recently is $383 with Air Canada, 8 Jan 2027 to 10 Jan 2027, found 5 days ago. The cheapest nonstop one-way found recently is $126 with United Airlines, 11 Dec, found yesterday.
How long is the flight from Washington to Montreal?
The cheapest nonstop one-way found recently, with United Airlines on 11 Dec, takes 1 h 46 min from Ronald Reagan National Airport (DCA) to Montreal-Pierre Elliott Trudeau International Airport (YUL). The cheapest one-way found recently, with Air Canada on 25 Nov, takes 4 h 30 min with 1 stop.
Which airlines have the cheapest flights from Washington to Montreal?
Between 8 Jan 2027 and 30 Oct 2027, Air Canada has the cheapest return on all 3 departure dates we hold.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work